A lightning protection device for natural ventilation cooling towers

Abstract

This utility model discloses a lightning protection device for a natural ventilation cooling tower. The device includes: lightning rods, tower leads, steel-concrete composite inclined supports, supports and ring base leads, grounding electrodes, tower lead ring connectors, grounding electrode ring connectors, and lightning rod ring connectors. Each lightning rod is installed at the top of the natural ventilation cooling tower and connected to the top surface of the steel-concrete composite inclined support via a corresponding tower lead. The bottom surface of the steel-concrete composite inclined support is connected to the corresponding grounding electrode via the supports and ring base leads. The lightning rods are electrically connected to each other via lightning rod ring connectors, the tower leads are electrically connected to each other via tower lead ring connectors, and the grounding electrodes are electrically connected to each other via grounding electrode ring connectors. This device's structural design overcomes the shortcomings of conventional lightning protection devices in the background, such as high construction difficulty and lack of maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of lightning protection technology for natural ventilation cooling towers, and particularly relates to a lightning protection device for natural ventilation cooling towers with steel pipe concrete inclined supports, especially for natural ventilation cooling towers containing steel pipe concrete inclined supports. Background Technology

[0002] Natural draft cooling towers are tall structures, and to protect them from lightning strikes, lightning protection devices are required. Typically, a natural draft cooling tower lightning protection device consists of three parts: a lightning rod, a lead wire, and a grounding electrode. The lightning rod is located at the top of the rigid ring of the cooling tower, arranged in a ring; the grounding electrode is located on the outside of the ring base, also arranged in a ring; the lead wire is buried within the tower body, inclined supports, piers, and ring base, with its upper end connected to the lightning rod and its lower end connected to the grounding electrode, forming a complete electrical path to promptly conduct lightning current into the ground and prevent damage to the cooling tower from lightning strikes.

[0003] In recent years, for indirect cooling towers and high-level towers with high air inlets, steel-concrete composite inclined supports are often used to improve construction efficiency. Unlike conventional reinforced concrete inclined supports, steel-concrete composite inclined supports use circular steel pipes as the outer shell, with self-compacting concrete poured inside. For natural draft cooling towers with steel-concrete composite inclined supports, burying lightning protection wires inside the steel pipes not only increases construction difficulty but also hinders maintenance, which is detrimental to the safety of the cooling tower. Utility Model Content

[0004] The purpose of this utility model is to overcome the problems of the prior art by disclosing a lightning protection device for a natural ventilation cooling tower. The structural design of this device solves the shortcomings of conventional lightning protection devices in the technical background, such as high construction difficulty and difficulty in maintenance.

[0005] The objective of this utility model is achieved through the following technical solution: A lightning protection device for a natural ventilation cooling tower, comprising: a lightning rod, a tower lead wire, a steel-concrete inclined support, a support pier and a ring base lead wire, a grounding electrode, a ring connector for the tower lead wire, a ring connector for the grounding electrode, and a ring connector for the lightning rod. Each lightning rod is installed at the top of the natural ventilation cooling tower and connected to the top of the surface of the steel pipe concrete inclined support through the corresponding tower tube lead wire. The bottom of the surface of the steel pipe concrete inclined support is connected to the corresponding grounding electrode through the support pier and ring base lead wire. Each lightning rod is electrically connected to the others via a lightning rod ring connector, each tower lead wire is electrically connected to the others via a tower lead wire ring connector, and each grounding electrode is electrically connected to the others via a grounding electrode ring connector.

[0006] According to a preferred embodiment, the lightning rods are arranged in a ring at the top of the natural ventilation cooling tower, and the number selected is 12 to 24.

[0007] According to a preferred embodiment, the lightning rod is connected to the lightning rod annular connector by welding.

[0008] According to a preferred embodiment, the lightning rod annular connector is an annular structure made of flat steel.

[0009] According to a preferred embodiment, the bottom end of the lightning rod is connected to the tower lead wire by welding, and the top end of the lightning rod is a pointed cone shape.

[0010] According to a preferred embodiment, the tower lead wire is buried inside the cooling tower cylinder wall, and the tower lead wire is distributed in a meridional direction, with the number consistent with that of the lightning rod.

[0011] According to a preferred embodiment, the tower lead wire ring connector is provided in 1 to 2 places in the vertical direction, and the tower lead wire ring connector is a ring structure made of flat steel.

[0012] According to a preferred embodiment, the tower lead ring connector is connected to each tower lead by welding.

[0013] According to a preferred embodiment, the two ends of the steel-concrete composite inclined support are welded to the tower lead wire, the support pier, and the ring base lead wire, respectively.

[0014] According to a preferred embodiment, the grounding electrode ring connector is a ring structure made of flat steel and is connected to the grounding electrode by welding.

[0015] The aforementioned main solution of this utility model and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted by this utility model and for which protection is sought. Those skilled in the art, after understanding the solution of this utility model, will realize, based on existing technology and common knowledge, that there are many combinations, all of which are technical solutions to be protected by this utility model; therefore, they are not exhaustively listed here.

[0016] The beneficial effects of this utility model are: This application is applicable to indirect cooling towers and high-level towers that use steel-concrete composite inclined supports. This application uses the outer wall of the steel pipe of the steel-concrete composite inclined support as part of the lightning protection conductor, eliminating the need for the conductor buried in the inclined support. This not only saves materials and reduces construction difficulty, but also facilitates inspection and maintenance, which is beneficial to the safety of the cooling tower. Attached Figure Description

[0017] Figure 1 This is a schematic elevation view of the lightning protection device for the natural ventilation cooling tower in this application; Figure 2 This is a schematic diagram of the lightning protection device for the natural ventilation cooling tower in this application; Figure 3 This is a cross-sectional schematic diagram of the connection structure between the lightning rod and the lead wire of the lightning protection device for the natural ventilation cooling tower of this application; Figure 4 This is a cross-sectional schematic diagram of the connection structure between the lead wire and the steel-concrete inclined support of the lightning protection device for the natural ventilation cooling tower in this application; Figure 5 This is a cross-sectional schematic diagram of the connection structure between the lead wire and the grounding electrode of the lightning protection device for the natural ventilation cooling tower in this application; Figure 6 This is a schematic diagram of the plan layout of the lead wire and grounding electrode connection structure of the lightning protection device for the natural ventilation cooling tower of this application; Among them, 1-lightning rod, 2-tower lead wire, 3-steel pipe concrete inclined support, 4-support and ring base lead wire, 5-grounding electrode, 6-tower lead wire ring connector, 7-grounding electrode ring connector, 8-lightning rod ring connector. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Furthermore, it should be noted that unless otherwise specified, the specific structures, connections, positions, power sources, etc. involved in this utility model are all things that a person skilled in the art can know without creative effort based on the prior art.

[0024] Example 1 refer to Figures 1 to 6 As shown in the figure, a lightning protection device for a natural ventilation cooling tower is provided. The device includes: a lightning rod 1, a tower lead wire 2, a steel pipe concrete inclined support 3, a support pier and a ring base lead wire 4, a grounding electrode 5, a tower lead wire ring connector 6, a grounding electrode ring connector 7, and a lightning rod ring connector 8.

[0025] Each lightning rod 1 is installed at the top of the natural ventilation cooling tower and connected to the top of the surface of the steel pipe concrete inclined support 3 via the corresponding tower tube lead 2. The bottom of the surface of the steel pipe concrete inclined support 3 is connected to the corresponding grounding electrode 5 via the support pier and the ring base lead 4.

[0026] Each lightning rod 1 is electrically connected to each other via lightning rod ring connector 8, each tower lead 2 is electrically connected to each other via tower lead ring connector 6, and each grounding electrode 5 is electrically connected to each other via grounding electrode ring connector 7.

[0027] Preferably, the lightning rods 1 are arranged in a ring at the top of the natural ventilation cooling tower, and the number selected is 12 to 24.

[0028] Preferably, the bottom end of the lightning rod 1 is connected to the tower lead wire 2 by welding, and the top end of the lightning rod 1 is conical. Specifically, the lightning rod 1 can be made of steel pipe ∅60X4.5, with a conical top end and a tip diameter of not less than 16mm.

[0029] Preferably, the lightning rod 1 is connected to the lightning rod annular connector 8 by welding. Further, the lightning rod annular connector 8 is an annular structure made of flat steel.

[0030] Preferably, the tower lead wire 2 is buried inside the cooling tower cylinder wall, and the tower lead wire 2 is distributed in a meridional direction, with the same number as the lightning rod 1, and is evenly distributed along the circumference.

[0031] Preferably, there are 1 to 2 tower lead wire ring connectors 6 in the vertical direction, and the tower lead wire ring connectors 6 are ring structures made of flat steel.

[0032] Furthermore, the tower lead wire annular connector 6 is connected to each tower lead wire 2 by welding. Each tower lead wire 2 is formed as a whole through the tower lead wire annular connector 6.

[0033] Preferably, the two ends of the steel-concrete inclined support 3 are welded to the tower lead wire 2, the support pier, and the ring base lead wire 4, respectively.

[0034] Preferably, the grounding electrode ring connector 7 is a ring structure made of flat steel and is connected to the grounding electrode 5 by welding, so that all the grounding electrodes 5 are connected into a whole.

[0035] In this embodiment, the tower lead wire 2 can be round steel with a diameter d=16mm. The support and ring base lead wire 4 can also be round steel with a diameter d=16mm. The grounding electrode can be made of steel pipe ∅70X3.75 with a pointed conical top.

[0036] This application is applicable to indirect cooling towers and high-level towers that use steel-concrete composite inclined supports. This application uses the outer wall of the steel pipe of the steel-concrete composite inclined support as part of the lightning protection conductor, eliminating the need for the conductor buried in the inclined support. This not only saves materials and reduces construction difficulty, but also facilitates inspection and maintenance, which is beneficial to the safety of the cooling tower.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lightning protection device for a natural draft cooling tower, characterized by, The lightning protection device for the natural ventilation cooling tower includes: a lightning rod (1), a tower lead wire (2), a steel pipe concrete inclined support (3), a support pier and a ring base lead wire (4), a grounding electrode (5), a tower lead wire ring connector (6), a grounding electrode ring connector (7), and a lightning rod ring connector (8). Each lightning rod (1) is installed at the top of the natural ventilation cooling tower and connected to the top of the surface of the steel pipe concrete inclined support (3) via the corresponding tower tube lead (2). The bottom of the surface of the steel pipe concrete inclined support (3) is connected to the corresponding grounding electrode (5) via the support pier and ring base lead (4). Each lightning rod (1) is electrically connected to each other via a lightning rod ring connector (8), each tower lead (2) is electrically connected to each other via a tower lead ring connector (6), and each grounding electrode (5) is electrically connected to each other via a grounding electrode ring connector (7).

2. The lightning protection device for a natural draft cooling tower according to claim 1, wherein The lightning rods (1) are arranged in a ring at the top of the natural ventilation cooling tower, and the number selected is 12 to 24.

3. The lightning protection device for a natural draft cooling tower according to claim 2, wherein The lightning rod (1) is connected to the lightning rod annular connector (8) by welding.

4. The lightning protection device for a natural draft cooling tower according to claim 1, wherein The lightning rod ring connector (8) is a ring structure made of flat steel.

5. The lightning protection device for a natural draft cooling tower according to claim 1, wherein The bottom end of the lightning rod (1) is connected to the tower lead wire (2) by welding, and the top end of the lightning rod (1) is a pointed cone shape.

6. The lightning protection device for a natural draft cooling tower according to claim 1, wherein The tower lead wire (2) is buried inside the cooling tower cylinder wall, and the tower lead wire (2) is distributed in the meridional direction, and its number is consistent with that of the lightning rod (1).

7. The lightning protection device for a natural draft cooling tower according to claim 1, wherein The tower lead wire ring connector (6) is provided with 1 to 2 pieces in the vertical direction, and the tower lead wire ring connector (6) is a ring structure made of flat steel.

8. The lightning protection device for a natural draft cooling tower according to claim 7, wherein The tower lead ring connector (6) is connected to each tower lead (2) by welding.

9. The lightning protection device for a natural draft cooling tower according to claim 1, wherein The steel-concrete inclined support (3) is welded to the tower tube lead wire (2), the support pier and the ring base lead wire (4) at both ends.

10. The lightning protection device for a natural draft cooling tower according to claim 1, wherein The grounding electrode ring connector (7) is a ring structure made of flat steel and is connected to the grounding electrode (5) by welding.

Images